通过rman日志诊断磁带库驱动故障

那天收到的朋友email给我的NBU的cat错误信息，朋友说很是突然的事情而且NBU报6错误，备份失败。[@more@]

发现archivelog日志文件并没有backup并且进行归档。df-k的时候发现已经增长了20％空间。呵呵，erp服务器就是忙啊！

channel ch00: starting piece 1 at 27-DEC-06
released channel: ch00
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ch00 channel at 12/27/2006 03:45:23
ORA-19506: failed to create sequential file, name="bk_ujui5vdcq_s1662_p1_t610252186", parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: Error received from media manager layer, error text:
VxBSACreateObject: Failed with error:
Server Status: Communication with the server has not been iniatated or the server status has not been retrieved from the server.

RMAN>

Recovery Manager complete.

检查rman log 发现问题出现在开始备份archivelog的时候，也就是release channel并且create new channel和create sequential file的时候才发生的问题。这说明rman（oracle）和NBU之间的api通讯是正常的，我想问题很有可能发生在NBU调用磁带库api的时候超时或者scsi通讯出现了问题，这一般都是由于线缆、磁带库终结器或者是驱动程序造成的。没有其他scsi线缆和终结器所以尝试升级磁带库驱动程序，重启master服务器。进入NBU启动 normal backup正常 ^_^，schedule backup正常，restore testing ok！问题解决了。^_^

Sun Microsystems Inc. SunOS 5.9 Generic May 2002
$ rman target /

Recovery Manager: Release 9.2.0.5.0 - 64bit Production

Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.

connected to target database: PROD (DBID=4270186773)

RMAN> list backup summary;

using target database controlfile instead of recovery catalog

List of Backups
===============
Key TY LV S Device Type Completion Time #Pieces #Copies Tag
------- -- -- - ----------- --------------- ------- ------- ---

1603 B 0 A SBT_TAPE 31-DEC-06 1 1 TAG20061231T011415
1604 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1605 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1606 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1607 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1608 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1609 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1610 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1611 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1612 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1613 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1614 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1615 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1616 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1617 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1618 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1619 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1620 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1621 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1622 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1623 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1624 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1625 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1626 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1627 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1628 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1629 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1630 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1631 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1632 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1633 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1634 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1635 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1636 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1637 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1638 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1639 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1640 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1641 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1642 B A A SBT_TAPE 31-DEC-06 1 1 TAG20061231T021654
1643 B F A SBT_TAPE 31-DEC-06 1 1 TAG20061231T032310
1644 B 0 A SBT_TAPE 01-JAN-07 1 1 TAG20070101T044017
1645 B A A SBT_TAPE 01-JAN-07 1 1 TAG20070101T054415
1646 B A A SBT_TAPE 01-JAN-07 1 1 TAG20070101T054415
1647 B A A SBT_TAPE 01-JAN-07 1 1 TAG20070101T054415
1648 B A A SBT_TAPE 01-JAN-07 1 1 TAG20070101T054415
1649 B A A SBT_TAPE 01-JAN-07 1 1 TAG20070101T054415
1650 B A A SBT_TAPE 01-JAN-07 1 1 TAG20070101T054415
1651 B F A SBT_TAPE 01-JAN-07 1 1 TAG20070101T055424

Nick

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